[0.6.8.1] 2018-10-25
    - fix typo and improve description formatting
[0.6.8.0] 2018-10-14
    - implement $linn
[0.6.7.1] 2018-10-13
    - fix $numformat-wrong-answer-for-0 boundary bug
[0.6.7.0] 2018-10-13
    - basic $numformat implementation
[0.6.6.0] 2017-08-29
    - distinguish between non/empty directories in MCM's displayed output
    - make it easier still to run the tests on preexisting binaries 
[0.6.5.0] 2017-01-09
    - enable mcmtags to generate qualified tags (e.g. Admin.Packages.add)
    - enhance mcm.vim to make use of qualified tags
[0.6.4.12] 2016-11-29
    - clean up emission of parse errors
    - permit use of @SPACE and other uppercase constants in package lets
[0.6.4.10] 2016-06-28
    - improve "mcm --help" output
    - fix why-can-immediate-locals-not-have-underscores bug
    - fix "let =" parsing oddity
    - slightly simplify compiled mcm output
    - spelling and punctuation fixes
[0.6.4.9] 2016-06-25
    - add one further parseerrortest
    - fix long-contents-with-some-$fragments-are-slow bug